检索结果-南通市图书馆

Nano Research 2014年第1期7卷 104-109页

作者： Hui Song Kyubong jo Bock Young jung Gun Young jung School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju Republic of Korea Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology Sogang University Seoul Republic of Korea Department of General Dentistry College of Dentistry Yonsei University Seoul Republic of Korea

一个垂直地排列的锐钛矿 TiO2 (A-TiO2 ) nanotube 数组被涂层制作了有一个 TiO2 先锋解决方案的一个 ZnO nanorod (NR ) 模板。在涂层以后， ZnO NR 核心有选择地在酸的环境被蚀刻形成 TiO2 nanotubes (NT ) 。在经由一个热水的方法种 ... 详细信息

一个垂直地排列的锐钛矿 TiO2 (A-TiO2 ) nanotube 数组被涂层制作了有一个 TiO2 先锋解决方案的一个 ZnO nanorod (NR ) 模板。在涂层以后， ZnO NR 核心有选择地在酸的环境被蚀刻形成 TiO2 nanotubes (NT ) 。在经由一个热水的方法种 ZnO NR 以后，更明确地，一个滴 TiO2 先锋答案被扔覆盖 ZnO NR，其顶以前被由静电的相互作用盖住材料的化学药品盖住，然后样品是 sintered。最后，样品沉浸于导致 ZnO NR 核心的选择蚀刻的一个酸的答案。因此，仅仅 TiO2 NT 在底层上留下了。盖住的材料有效地被用来创造一个完美的、六角形的无限制的 TiO2 NT 数组，它有趣地向可见区域扩大发作吸收。

关键词：覆盖材料锐钛矿型 TiO2纳米周期性排列二氧化钛纳米管垂直化学六角形

Asymptomatic lymphangioma involving the spleen and retroperitoneum in adults

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World journal of Gastroenterology 2009年第44期15卷 5620-5623页

作者： Sook Hee Chung Young Sook Park Yun Ju jo Seong Hwan Kim Dae won Jun Byoung Kwan Son Jun Young jung Dae Hyun Baek Dong Hee Kim Yoon Young jung won Mi Lee Department of Internal Medicine Eulji General Hospital Eulji University School of MedicineSeoul 139-711South Korea Department of General Surgery Eulji General HospitalEulji University School of MedicineSeoul 139-711 South Korea Department of Radiology Eulji General HospitalEulji University School of MedicineSeoul 139-711 South Korea Department of Pathology Eulji General Hospital Eulji University School of MedicineSeoul 139-711 South Korea

Lymphangioma,a benign neoplasm of the lymphatic system,is common in children but rare in *** clinical manifestations include abdominal pain,nausea, vomiting and a palpable ***,abdominal sonography or abdominal computed tomography(CT) scan can also incidentally reveal lymphangioma.A larger or symptomatic lymphangioma is treated with total resection to prevent recurrence,infection,torsion and *** lymphangioma rarely becomes malignant,its prognosis is generally good. We report a cystic lymphangioma of the spleen and retroperitoneum,which was incidentally found in a 56-year-old man who was hospitalized due to a colon *** examination showed no specific *** CT revealed a 5.7 cm,non-enhanced multilobulated cystic mass with multiple septa in the spleen and a 10 cm lobulated cystic mass in the paraaortic *** and retroperitoneal resection of the cystic mass were *** endotheliumof splenic and retroperitoneal cyst was immunohisto- chemically stained with D2-40 *** patient was finally diagnosed with splenic cystic and retroperitoneal cavernous lymphangioma.

关键词：淋巴管瘤脾脏腹膜症状免疫组织化学染色成人断层扫描 CT扫描

Nanotherapeutics for regeneration of degenerated tissue infected by bacteria through the multiple delivery of bioactive ions and growth factor with antibacterial/angiogenic and osteogenic/odontogenic capacity

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bioactive Materials 2021年第1期6卷 123-136页

作者： Ahmed El-Fiqi Nandin Mandakhbayar Seung Bin jo jonathan C.Knowles jung-Hwan Lee Hae-won Kim Institute of Tissue Regeneration Engineering(ITREN) Dankook UniversityCheonan31116Republic of Korea Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine Dankook UniversityCheonan31116Republic of Korea Glass Research Department National Research CentreCairo12622Egypt Division of Biomaterials and Tissue Engineering UCL Eastman Dental Institute256 Grays Inn RoadLondonWC1X 8LDUK The Discoveries Centre for Regenerative and Precision Medicine UCL CampusLondonUK Department of Biomaterials Science School of DentistryDankook UniversityCheonan31116Republic of Korea UCL Eastman-Korea Dental Medicine Innovation Centre Dankook UniversityCheonan31116Republic of Korea

Therapeutic options are quite limited in clinics for the successful repair of infected/degenerated *** the prevalent treatment is the complete removal of the whole infected tissue,this leads to a loss of tissue function and serious *** the dental pulp infection,as one of the most common dental problems,was selected as a clinically relevant case to regenerate using a multifunctional nanotherapeutic *** this,a mesoporous bioactive glass nano-delivery system incorporating silicate,calcium,and copper as well as loading epidermal growth factor(EGF)was designed to provide antibacterial/pro-angiogenic and osteo/odontogenic multiple therapeutic ***-functionalized Cu-doped bioactive glass nanospheres(Cu-BGn)were prepared to be 50–60 nm in size,mesoporous,positive-charged and *** Cu-BGn could release bioactive ions(copper,calcium and silicate ions)with therapeutically-effective *** Cu-BGn treatment to human umbilical vein endothelial cells(HUVEC)led to significant enhancement of the migration,tubule formation and expression of angiogenic gene(*** endothelial growth factor,VEGF).Furthermore,the EGF-loaded Cu-BGn(EGF@Cu-BGn)showed pro-angiogenic effects with antibacterial activity against ***,a pathogen commonly involved in the pulp *** note,under the co-culture condition of HUVEC with ***,the secretion of VEGF was *** addition,the osteo/odontogenic stimulation of the EGF@Cu-BGn was evidenced with human dental pulp stem *** local administration of the EGF@Cu-BGn in a rat molar tooth defect infected with *** revealed significant in vivo regenerative capacity,highlighting the nanotherapeutic uses of the multifunctional nanoparticles for regenerating infected/damaged hard tissues.

关键词： Nanotherapeutics Mesoporous bioglass nanospheres Copper ion/Growth factor Antibacterial/angiogenesis Osteogenesis/odontogenesis

Effect of serum testosterone and percent tumor volume on extra-prostatic extension and biochemical recurrence after laparoscopic radical prostatectomy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Asian journal of Andrology 2016年第1期18卷 54-59页

作者： Eu Chang Hwang Seong Hyeon Yu Yang Hyun jo Seung I1 jung Taek won Kang Dong Deuk Kwon Chan Choi Suk Hee Heo Jun Eul Hwang Sung-Hoon jung Tae-Young jung Department of Urology Chonnam National University Medical School Gwangju Republic of Korea Department of Pathology Chonnam National University Medical School Gwangju Republic of Korea Department of Radiology Chonnam National University Medical School Gwangju Republic of Korea Department of Hemato-oncology Chonnam National University Medical School Gwangju Republic of Korea Department of Neurosurgery Chonnam National University Medical Schoo Gwangju Republic of Korea

Several studies have revealed that the preoperative serum testosterone and percent tumor volume （PTV） predict extra-prostatic extension （EPE） and biochemical recurrence （BCR） after radical prostatectomy. This study investigated the prognostic significance of serum testosterone and PTV in relation to EPE and BCR after laparoscopic radical prostatectomy （LRP）. We reviewed 520 patients who underwent LRP between 2004 and 2012. PTV was determined as the sum of all visually estimated tumor foci in every section. BCR was defined as two consecutive increases in the postoperative prostate-specific antigen （PSA）〉0.2 ng ml^-1. The threshold for serum total testosterone was 3.0 ng ml^-1, Multivariate logistic regression was used to define the effect of variables on the risk of EPE and BCR. A low serum testosterone （〈3.0 ng ml^-1） was associated with a high serum PSA, Gleason score, positive core percentage of the prostate biopsy, PTV, and all pathological variables. On multivariate analysis, similar to previous studies, the serum PSA, biopsy positive core percentage, Gleason score, and pathological variables predicted EPE and BCR. In addition, low serum testosterone （〈3.0 ng ml^-1, adjusted OR, 8.52; 95% CI, 5.04-14.4, P = 0.001） predicted EPE and PTV （adjusted OR, 1.02; 95% CI, 1.01-1.05, P = 0.046） predicted BCR. In addition to previous predictors of EPE and BCR, low serum testosterone and PTV are valuable predictors of EPE and BCR after LRP.

关键词： biochemical recurrence extra-prostatic extension prostate neoplasms prostatectomy testosterone tumor burden

Coral-Like Yolk–Shell-Structured Nickel Oxide/Carbon Composite Microspheres for High-Performance Li-Ion Storage Anodes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Nano-Micro Letters 2019年第1期11卷 46-63页

作者： Min Su jo Subrata Ghosh Sang Mun Jeong Yun Chan Kang jung Sang Cho Department of Engineering Chemistry Chungbuk National University Department of Chemical Engineering Chungbuk National University Department of Materials Science and Engineering Korea University

In this study, coral?like yolk–shell?structured NiO/C composite microspheres(denoted as CYS?NiO/C) were prepared using spray pyrolysis. The unique yolk–shell structure was characterized, and the formation mechanism of the structure was proposed. Both the phase separation of the polyvinylpyrrolidone and polystyrene(PS) colloidal solution and the decompo?sition of the size?controlled PS nanobeads in the droplet played crucial roles in the formation of the unique coral?like yolk–shell structure. The CYS?NiO/C microspheres delivered a reversible discharge capacity of 991 mAh g^(-1) after 500 cycles at the current density of 1.0 A g^(-1). The dis?charge capacity of the CYS?NiO/C microspheres after the 1000 th cycle at the current density of 2.0 A g^(-1) was 635 mAh g^(-1), and the capacity retention measured from the second cycle was 91%. The final discharge capacities of the CYS?NiO/C microspheres at the current densities of 0.5, 1.5, 3.0, 5.0, 7.0, and 10.0 A g^(-1) were 753, 648, 560, 490, 440, and 389 mAh g^(-1), respectively. The synergetic e ect of the coral?like yolk–shell structure with well?defined interconnected mesopores and highly conductive carbon resulted in the excellent Li+?ion storage properties of the CYS?NiO/C microspheres.

关键词： Yolk-shell Nickel oxide Carbon composite Anode materials Spray pyrolysis Lithium-ion batteries

Development of temperature-robust damage factor based on sensor fusion for a wind turbine structure

在线全文

学校读者我要写书评

暂无评论

Frontiers of Structural and Civil Engineering 2015年第1期9卷 42-47页

作者： jong-Woong PARK Sung-Han SIM Jin-Hak YI Hyung-jo jung Department of Civil and Environmental Engineering University of Illinois at Urbana-Champaign Urbana IL 61801 USA School of Urban and Environmental Engineering Ulsan National Institute of Science and Technology (UNIST) Ulsan 689- 798Republic of Korea Coastal Development & Ocean Engineering Research Division Korea Institute of Ocean Science and Technology Ansan 426-744Republic of Korea Department of Civil and Environmental Engineering KAIST Daejeon 305-701 Republic of Korea

Wind power systems have gained much attention due to the relatively high reliability, maturity in technology and cost competitiveness compared to other renewable alternatives. Advances have been made to increase the power efficiency of the wind turbines while less attention has been focused on structural integrity assessment of the structural systems. Vibration-based damage detection has widely been researched to identify damages on a structure based on change in d^mmic characteristics. Widely spread methods are natural frequency-based, mode shape-based, and curvature mode shape-based methods. The natural frequency-based methods are convenient but vulnerable to environmental temperature variation which degrades damage detection capability; mode shapes are less influenced by temperature variation and able to locate damage but requires extensive sensor instrumentation which is costly and vulnerable to signal noises. This study proposes novelty of damage factor based on sensor fusion to exclude effect of temperature variation. The combined use of an accelerometer and an inclinometer was considered and damage factor was defined as a change in relationship between those two measurements. The advantages of the proposed method are： 1） requirement of small number of sensor, 2） robusmess to change in temperature and signal noise and 3） ability to roughly locate damage. Validation of the proposed method is carried out through numerical simulation on a simplified 5 MW wind turbine model.

关键词： sensor fusion damage detection structural health monitoring

Development of a hybrid scaffold and a bioreactor for cartilage regeneration

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2009年第19期54卷 3608-3612页

作者： LEE Seung-Jae LEE In Hwan PARK Jeong Hun GWAK So-jung RHIE jong-won CHO Dong-Woo KO Tae jo KIM Dong Sung BK21 Mechatronics Group at Chungnam National University School of Mechanical Engineering Chungbuk National University DDS Research Lab. CKD Research Institute CKD Pharmaceutical Corp. Department of Plastic Surgery College of Medicine The Catholic University of Korea Department of Mechanical Engineering Pohang University of Science and Technology School of Mechanical Engineering Yeungnam University School of Mechanical Engineering Chung-Ang University

We developed a hybrid scaffold and a bioreactor for cartilage regeneration. The hybrid scaffold was developed as combination of two components: a biodegradable framework and hydrogel-containing chondrocytes. We performed the MTT cell proliferation assay to compare the proliferation and viability of chondrocytes on three types of scaffolds: an alginate gel, the hybrid scaffold, and an alginate sponge. Cells were encapsulated in 2% agarose gel. The bioreactor consisted of a circulation system and a compression system. We performed dynamic cell culture on these agarose gels in the bioreactor for 3 days.

关键词： MTT 生物分解凝解胶研究

Domain-engineered BiFeO3 thin-film photoanodes for highly enhanced ferroelectric solar water splitting

在线全文

学校读者我要写书评

暂无评论

Nano Research 2018年第2期11卷 642-655页

作者： Song, Jaesun Kim, Taemin Ludvic Lee, jongmin Cho, Sam Yeon Cha, Jaeseong Jeong, Sang Yun An, Hyunji Kim, Wan Sik jung, Yen-Sook Park, Jiyoon jung, Gun Young Kim, Dong-Yu jo, Ji Young Bu, Sang Don Jang, Ho won Lee, Sanghan School of Materials Science and Engineering Gwangju Institute of Science and Technology (GIST) Gwangju Republic of Korea Department of Materials Science and Engineering Research Institute of Advanced Materials Seoul National University Seoul Republic of Korea Department of Physics Chonbuk National University Jeonju Republic of Korea

In photoelectrochemical （PEC） water splitting, charge separation and collection by the electric field in the photoactive material are the most important factors for improved conversion efficiency. Hence, ferroelectric oxides, in which electrons are the majority carriers, are considered promising photoanode materials because their high built-in potential, provided by their spontaneous polarization, can signifi＇canfly enhance the separation and drift of photogenerated carriers. In this regard, the PEC properties of BiFeO3 thin-film photoanodes with different crystallographic orientations and consequent ferroelectric domain structures are investigated. As the crystallographic orientation changes from （001）pc via （ll0）pc to （lll）p~, the ferroelastic domains in epitaxial BiFeO3 thin films become mono-variant and the spontaneous polarization levels increase to 110 btC/cm2. Consequent136 the photocurrent density at 0 V vs. Ag/AgC1 increases approximately 5.3-fold and the onset potential decreases by 0.180 V in the downward polarization state. It is further demonstrated that ferroelectric switching in the （lll）pc BiFeO3 thin-film photoanode leads to an approximate change of 8,000% in the photocurrent density and a 0.330 V shift in the onset potential. This study strongly suggests that domain-engineered ferroelectric materials can be used as effective charge separation and collection layers for efficient solar water-splitting photoanodes.

关键词： BiFeO3 ferroelectric photoelectrochemical domain orientation pulsed laser deposition

LED照射光催化剂用于苯、甲苯、乙苯和二甲苯分解(英文)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

催化学报 2012年第10期33卷 1672-1680页

作者： jo Wan-Kuen KANG Hyun-jung Department of Environmental Engineering Kyungpook National University

Studies on the use of gas phase applications of light emitting diodes(LEDs) in photocatalysis are scarce although their photocatalytic decomposition kinetics of environmental pollutants are likely different from those in aqueous *** present study evaluated the use of chips of visible light LEDs to irradiate nitrogen doped titania(N-TiO2) prepared by hydrolysis to decompose gaseous benzene,toluene,ethyl benzene,m-xylene,p-xylene,and *** calcined at different temperatures were characterized by various analytical *** degradation efficiency of benzene was close to zero for all *** the other compounds,a conventional 8 W daylight lamp/N-TiO2 unit gave a higher photocatalytic degradation efficiency as compared with that of visible-LED/N-TiO2 ***,the ratios of degradation efficiency to electric power consumption were higher for the photocatalytic units that used two types of visible-LED lamps(blue and white LEDs).The highest degradation efficiency was observed with the use of a calcination temperature of 350 *** average degradation efficiencies for toluene,ethyl benzene,m-xylene,p-xylene,and o-xylene were 35%,68%,94%,and 93%,*** use of blue-and white-LEDs,high light intensity,and low initial concentrations gave high photocatalytic activities for the photocatalytic units using *** morphological and optical properties of the photocatalysts were correlated to explain the dependence of photocatalytic activity on calcination *** results suggest that visible-LEDs are energy efficient light source for photocatalytic gas phase applications,but the activity depends on the operational conditions.

关键词： light emitting diode energy efficiency gas phase degradation photocatalyst characterization calcination temperature

铝板为基础的S掺杂TiO_2催化分解有毒有机气体(英文)

在线全文

学校读者我要写书评

暂无评论

催化学报 2014年第7期35卷 1189-1195页

作者： Wan-Kuen jo Hyun-jung Kang Department of Environmental Engineering Kyungpook National University

S-doped TiO2(S-TiO2) films were immobilized on flexible low-cost aluminum sheets(S-TiO2-AS) using a sol-gel dipping process and low post-processing temperatures. The photocatalytic degradation of toxic organic vapors using the prepared films was evaluated using a continuous-flow glass tube under visible light exposure. The surface properties of the S-TiO2-AS and TiO2-AS films were examined by scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and ultraviolet-visible spectroscopy. The photolysis of benzene, toluene, ethyl benzene, and xylene(BTEX) did not occur on the bare AS. In contrast, the photocatalytic degradation efficiencies of the target pollutants using S-TiO2-AS were higher than those obtained using reference TiO2-AS photocatalyst. In particular, the average photocatalytic degradation efficiencies of BTEX using S-TiO2-0.8-AS(S/Ti ratio = 0.8) over a 3-h process were 34%, 78%, 91%, and 94%, respectively, whereas those of TiO2-AS were 2%, 11%, 21%, and 36%, respectively. The photocatalytic decompo-sition efficiencies of BTEX under visible irradiation using S-TiO2-AS increased with increasing S/Ti ratios from 0.2 to 0.8, but decreased when the ratio further increased to 1.6. Thus, S-TiO2-AS can be prepared using optimal S/Ti ratios. The degradation of BTEX over S-TiO2-AS depended on the air flow rates and initial concentrations of the target chemical. Overall, under optimal conditions, S-TiO2-AS can be effectively applied for the purification of toxic organic vapors.

关键词： TiO2 有机气体催化分解有毒掺杂铝板光催化降解效率扫描电子显微镜